Sérgey
given name · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
Sérgey is a given name written in the Latin script, with more bearers in Russia than in any other country, where it is the 3rd most common given name. Recorded meaning: Transliteration of Russian Серге́й (Sergéj), from Latin Sergius.
- RURussia≈1 in 31as Сергей(inferred from the name graph)
- UAUkraine≈1 in 36as Сергій
- MDMoldova1 in 51as Serghei
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Where a country counts another spelling of the name rather than Sérgey itself, the figure is that spelling’s, and it is named. One hue, darker where it is more common; hover a country for its figure.
- Russia (inferred from the name graph)
- #8 (measured from records)
- 9 (measured from records)
- Sources
- 499 (measured from records)
- ≈1 in 31 (inferred from the name graph)
≈4,500,000 named Сергей, est.
of 15M given names
recorded for this name
Highest-authority source
Russia, est., as Сергей
measured from records inferred from the name graph
Spellings & scripts(measured from records)
Locally spelled Sergio in AR Argentina, BR Brazil, ES Spain, Сергей in RU Russia, BY Belarus, Сергій in UA Ukraine and Sergej in MD Moldova.
Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.
Meaning & origin(measured from records)
- RussianСерге́йSergéj(measured from records)
- LatinSergius(measured from records)
Transliteration of Russian Серге́й (Sergéj), from Latin Sergius.
Sources 2
Attested across 14 languages in the etymology graph.
Where in the world(measured from records)
Sérgey counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.
Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.
| Country | Most common spelling | Sources | ||||
|---|---|---|---|---|---|---|
| RU Russia | #3 | ≈4,500,000 est. | ≈1 in 31 | #4 | Сергей | 311 |
| UA Ukraine | #6 | ≈1,200,000 est. | ≈1 in 36 | listed | Сергій | 149 |
| BR Brazil | #53 | 357,718as Sergio | 1 in 592 | 405K | Sergio | 240 |
| AR Argentina | #62 | ≈280,000 est. | ≈1 in 164 | 427 | Sergio | 198 |
| ES Spain | #25 | 210,727as Sergio | 1 in 237 | 211K | Sergio | 283 |
| BY Belarus | #6 | ≈170,000 est. | ≈1 in 56 | 145 | Сергей | 112 |
| MD Moldova | #25 | 65,336as Serghei | 1 in 51 | 65K | Sergej | 40 |
| LV Latvia | #16 | 20,413as Sergejs | 1 in 92 | 20K | סרגיי | 60 |
Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.
Registers cited: RENAPER — Apellidos (person counts, national); IBGE — names by decade (Kaggle mirror); IBGE — Nomes (census name API); INE — Padrón per-token widgets (current living counts, given + apellidos); Universal Dependencies Belarusian-HSE Corpus — Person Names (UD_Belarusian-HSE); e-services.md — living population register; PMLP — Personu vārdi (given names in population register). Figures without a register are Mondonomo estimates; see Methodology.
Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).
Evidence(measured from records)
No register attests this spelling yet
Frequently asked questions
- What does the name Sérgey mean, and where does it come from?
- Transliteration of Russian Серге́й (Sergéj), from Latin Sergius. Recorded by Wiktionary and Nordic Names.
- Is Sérgey a male or female name?
- Sérgey is a male name in our records. Opposite-gender entries fall within the cross-gender noise we measure in the source data, so we don't report them as usage.
- In which country does Sérgey have the most bearers?
- Mondonomo estimates about 4.5 million people named Сергей in Russia, more than in any other country we hold.
- How common is the name Sérgey?
- In Brazil, the national register counted 357,718 people named Sergio in 2022, about 1 in 592 residents.
- How common is Sérgey compared with other names?
- In Russia, Sérgey is the 3rd most common given name of 472,143 given names recorded there.
What do you want to know about Sérgey?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/s%C3%A9rgeyThe payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.
About this data
measured from records inferred from the name graph machine-generated
These figures come from the data snapshot of and will change as it is rebuilt.
Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.
Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.
Cite this page Mondonomo, “Sérgey” — the 3rd most common given name in Russia. Data snapshot 2026-10-10.